Titleist 620 MB Iron SetTitleist 620 MB Iron Set Key Features of the Titleist 620 MB Irons: Advanced muscle back design offers tour proven flight with increased shot and trajectory control Progressive blade lengths with thinner top lines allow for player preferred shaping and optimized playability Reduced offset provides the ultimate players look, while enhancing workability and shot control One piece forging from 1025 carbon steel delivers pure feel at impact Tour refined